mirror of
https://github.com/saitohirga/WSJT-X.git
synced 2024-11-16 00:51:56 -05:00
a51c5c4251
As at ^/branches/wsjtx_exp@5271 git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@5272 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
85 lines
2.7 KiB
Fortran
85 lines
2.7 KiB
Fortran
program JT65code
|
|
|
|
! Provides examples of message packing, bit and symbol ordering,
|
|
! Reed Solomon encoding, and other necessary details of the JT65
|
|
! protocol.
|
|
|
|
use packjt
|
|
character*22 msg,msg0,msg1,decoded,cok*3,bad*1,msgtype*10
|
|
integer dgen(12),sent(63),recd(12),era(51)
|
|
include 'testmsg.f90'
|
|
|
|
nargs=iargc()
|
|
if(nargs.ne.1) then
|
|
print*,'Usage: jt65code "message"'
|
|
print*,' jt65code -t'
|
|
go to 999
|
|
endif
|
|
|
|
call getarg(1,msg) !Get message from command line
|
|
nmsg=1
|
|
if(msg(1:2).eq."-t") then
|
|
testmsg(NTEST+1)="KA1ABC WB9XYZ EN34 OOO"
|
|
testmsg(NTEST+2)="KA1ABC WB9XYZ OOO"
|
|
testmsg(NTEST+3)="RO"
|
|
testmsg(NTEST+4)="RRR"
|
|
testmsg(NTEST+5)="73"
|
|
nmsg=NTEST+5
|
|
endif
|
|
|
|
write(*,1010)
|
|
1010 format(" Message Decoded Err? Type"/ &
|
|
74("-"))
|
|
|
|
do imsg=1,nmsg
|
|
if(nmsg.gt.1) msg=testmsg(imsg)
|
|
|
|
call fmtmsg(msg,iz) !To upper, collapse mult blanks
|
|
msg0=msg !Input message
|
|
call chkmsg(msg,cok,nspecial,flip) !See if it includes "OOO" report
|
|
msg1=msg !Message without "OOO"
|
|
|
|
if(nspecial.gt.0) then !or is a shorthand message
|
|
if(nspecial.eq.2) decoded="RO"
|
|
if(nspecial.eq.3) decoded="RRR"
|
|
if(nspecial.eq.4) decoded="73"
|
|
itype=-1
|
|
msgtype="Shorthand"
|
|
go to 10
|
|
endif
|
|
|
|
call packmsg(msg1,dgen,itype) !Pack message into 12 six-bit bytes
|
|
msgtype=""
|
|
if(itype.eq.1) msgtype="Std Msg"
|
|
if(itype.eq.2) msgtype="Type 1 pfx"
|
|
if(itype.eq.3) msgtype="Type 1 sfx"
|
|
if(itype.eq.4) msgtype="Type 2 pfx"
|
|
if(itype.eq.5) msgtype="Type 2 sfx"
|
|
if(itype.eq.6) msgtype="Free text"
|
|
|
|
call rs_encode(dgen,sent) !RS encode
|
|
call interleave63(sent,1) !Interleave channel symbols
|
|
call graycode(sent,63,1,sent) !Apply Gray code
|
|
call graycode(sent,63,-1,sent)
|
|
call interleave63(sent,-1)
|
|
call rs_decode(sent,era,0,recd,nerr)
|
|
call unpackmsg(recd,decoded) !Unpack the user message
|
|
if(cok.eq."OOO") decoded(20:22)=cok
|
|
call fmtmsg(decoded,iz)
|
|
|
|
10 bad=" "
|
|
if(decoded.ne.msg0) bad="*"
|
|
write(*,1020) imsg,msg0,decoded,bad,itype,msgtype
|
|
1020 format(i2,'.',2x,a22,2x,a22,3x,a1,i3,": ",a13)
|
|
enddo
|
|
|
|
if(nmsg.eq.1 .and. nspecial.eq.0) then
|
|
write(*,1030) dgen
|
|
1030 format(/'Packed message, 6-bit symbols ',12i3) !Display packed symbols
|
|
|
|
write(*,1040) sent
|
|
1040 format(/'Information-carrying channel symbols'/(i5,20i3))
|
|
endif
|
|
|
|
999 end program JT65code
|